Re: VRF-lite in a pure OSPF network

MPLS Fundamentals, Cisco Press, P.243 - Section "OSPF VRF-Lite command"

It explains the checks the router does to avoid loops.

HTH,

Rob

On Thu, Jan 12, 2012 at 10:24 AM, Michel Grossenbacher <pashtuk_at_gmail.com>wrote:

> Hi all
> I got some issues at the moment with VRF-lite and the capability vrf-lite
> command in a pure OSPF network. There is plenty of documentation around for
> VRF-Lite in combantion with OSPF and BGP, but I cant find something for
> OSPF only.
>
> Just a simple layout:
>
> R1 -- R2 -- R3
>
> - R14s loopback is playing the area 0, Loopback 1 is redistributed into
> OSPF (just to have an External LSA)
> - R1, R2 and R3 are all in Area 123 -> totaly stubby area
> - R2 is configured for VRF lite on both interfaces (R1/R3)
>
> So as it is now, R2 is not able to see (as to put in his routing table) any
> Inter-Area Routes (R1s lo0 interface, Summary LSAs), even though its in the
> OSPF Database and it is advertising all routes to R3. I know the command
> capability vrf-lite does fix this, but I4d like to know why the router
> behaves like this and cant find any answer so far. Kinda driving me nuts
> :-D
>
> Any help would be greatly appreciated
>
> best regards
>
> Michel
>
>
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Received on Thu Jan 12 2012 - 11:17:05 ART